Well, You made your point!
About this map c2a5b and with the whole ST is debatable for 2 reasons:
1- the guy who made ST left the team before the maps of this chapter were completed:
Look at the Garg chase,you can easily guess that is not a finished work(weightless cars,Garg AI bugs and issue with pathfinding).
2-If you decompile it you’ll notice that exists a tentacle entity.
has the tentacle been scrapped during the development by that mapper or the other Devs decided a feature freeze in order to release BM asap?
We might never know.
Anyway, I respect your point.